Claude Opus 5.5 (Medium, Default Fallback) vs Gemini 2.5 Flash (Reasoning)
Claude Opus 5.5 (Medium, Default Fallback) vs Gemini 2.5 Flash (Reasoning). A reliable intelligence-versus-cost verdict requires both models' intelligence scores and benchmark-run costs. Missing data is not a performance verdict.
Verdict
Comparison incomplete
A reliable intelligence-versus-cost verdict requires both models' intelligence scores and benchmark-run costs. Missing data is not a performance verdict.
| Metric | Claude Opus 5.5 (Medium, Default Fallback) | Gemini 2.5 Flash (Reasoning) | Difference |
|---|---|---|---|
| Intelligence (higher is better) | 51.2 | 13.1 | −74.4% Gemini 2.5 Flash (Rea… is 74.4% less intelligent |
| Total AA cost (lower is better) | $1,626.81 | Not reported | — not comparable |
| End-to-end time (lower is better) | 21.83s | 17.17s | −21.3% Gemini 2.5 Flash (Rea… is 21.3% faster |
| Price per 1M tokens (in / out) | $4.00 / $20.0 | $0.30 / $2.50 | |
| Input modalities | Text, Image | Text, Image, Speech, Video |
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Accept: text/markdown or ?format=md returns this page as Markdown. JSON: /api/v1/compare/claude-opus-5-5-medium/gemini-2-5-flash-reasoning · Markdown: /api/v1/compare/claude-opus-5-5-medium/gemini-2-5-flash-reasoning?format=md · llms.txt · agent skill